Mitigating the unknown behaviour of river systems through proactive anticipation
Oeiras is crossed by watercourses whose hydraulic behaviour was a long-standing headache. A network of more than 40 sensors now lets teams act before the streams overflow.

The challenge
Oeiras is crossed by several watercourses whose hydraulic behaviour is still a headache for the Municipal Civil Protection Service. With flood dynamics largely unknown, preventive work was hard to plan.
How can the municipality act preventively, given the size of its river network and the complexity of its dynamics?
What we deployed
A network of water level and flood detection sensors at critical points across the municipality, feeding a real-time monitoring platform that sends WhatsApp, email and SMS alerts to field units, allowing them to act before situations escalate.
What changed
Operational teams are mobilised earlier, and emergency measures are put in place near watercourses known to overflow during heavy rainfall. One of these places is Santo Amaro de Oeiras, crossed by the Ribeira da Laje, with many public spaces and homes along its course. Every event adds to what the municipality knows about how its streams behave.
- Early mobilisation of teams
- Hydraulic intelligence on flood dynamics
Why it matters
A short, intense downpour can turn a small urban stream into a flood within minutes. Knowing which streams react first, and how fast, means teams are in position before the water rises instead of being sent after it. In neighbourhoods like Santo Amaro, that is the difference between closing an access in time and dealing with flooded public spaces and homes.
- Teams sent out after streams have already overflowed
- Late response near homes and public spaces
- Preventive plans built on guesswork
GET A FLOOD-RISK ASSESSMENT FOR YOUR CITY
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